28 Suppose that grade point averagesC Of undergraduate Students at oneOf the University have a bell Shapeddistribution with a mean of2.59 and a Standard cleviationOF 0.39. Using empirical Rulewhat percentage ofhave grade point average that arebetween 1, 42 and 3,76the Students

Given Information: The grade point averages of undergraduate students at a University follow a…

Answered: Students at one 28 Suppose that grade.…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that three drugs used to reduce systolic blood pressure are compared in a randomized experiment in which four people use each drug for a month. The data for the reductions in systolic blood pressure for the N = 12 participants follow. Drug 1 Drug 2 Drug 3 7 8 16 2 12 5 5 6 4 10 Calculate the F-statistic for comparing the mean cholesterol reductions for the three drugs. What is the value of F? | (report to 2 decimal places) What are the degrees of freedom for this statistic - Between df? .Within df?
The number of Facebook friends students at a univeristy have are Normally distributed with a mean of 1200 and a standard deviation of 200. What percentage of students has AT LEAST 1000 Facebook friends?
IQs measured on a certain scale are normally distributed with a mean of 90 and a variance of 400. whats the probability that a random person will have an IQ between 120 and 130. the IQ of 51 people was taken, a sample mean of 90 and standard deviation of 64 was obtained. does this support that people tend to have IQs<100? use a 5% level of significance.
Aspirin is packed in 120 tab bottles with weight normally distributed with mean 600g and standard deviation 6g. Rejected bottles are those whose weight differs from the mean weight by 15g or more. That is, rejected bottles have weight either too small or too large. We want to find out how many bottles will be rejected from a daily production of 5000 bottles. 1,Do we have to calculate one z-score or two z-scores? 2. The negative z-score is 3. The positive z-score is 4.How many bottles, of the 5000, do we anticipate to have to reject?
Say you have two sets of data X1, ..., X10 and Y1,..., Y40. All of this data is considered independent. The first set of data are Normally distributed with mean B and variance 10. The second set of data are Normally distributed with mean y and variance 10. We are trying to estimate 0 = X = X; 18 + y. Consider the estimate ô = }X + Ÿ where 3 4 iX + Y where 10 vi=1 1 10 and Y = E Y;? 40 vi=1 40 (a) What is the mean, variance and distribution of 0? (b) What is the probability that 0 is larger than 1 away from 0? (c) What is the bias, variance and MSE of the estimate 0 for estimating 0?
Suppose that the distance of fly balls hit to the outfield is normally distributed with a mean of 252 feet in a standard deviation of 50 feet We randomly sample 49 fly balls Give the distribution if overline x
nd the 30th and 98th percentile values cf a normal variable with Mean of 12_and Variance of 30 Anot This I NEED PARTBI b), Suppose we sample 3 items from this population. Find the variables that correspond to the central 85% Confident Interval range of the sum of these 3 samples.
If a distribution is normal with mean=60 and standard deviation=15 what is the z score of 40?
can someone please help me? I keep getting this wrong so if someone could explain that would help so much. Thanks!! the t statistic test is -3.108 by the way!
Suppose that grade point average of undergraduate students at one university has a bell shaped distribution with a mean of 2.61 and a standard deviation of 0.41 using the empirical rule what percentage of the students have a grade point average is that are between 1.38 and 3.84
Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 146 minutes with a standard deviation of 16 minutesConsider 49 of the races Find the probabillity that the average of the sample will be between 144 and 146 min in the 49 marathons B find the 80th percentile for the average of these 49 marathons C find the median
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Students at one 28 Suppose that grade. Of undergraduate Of the university have a bell Shaped distribution with a mean of 12.59 and a Standard cleviation OF 0.39. Using empirical Rule what percentage of the Students have grade point average that are